/* 公共样式 */
*{
    margin: 0;
    padding:0;
}
body{
    background:#f7f7f7;
    font-family: 'Micorsoft yahei';
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
.fl{
    float:left;
}
.fr{
    float:right;
}
i,em{
    font-style: normal;
}